Room-heating plant.



2 SHEETS-SHEET 1.

Patented May 25,1909.

B. KORTING. I ROOM HEATING PLANT. APPLICATION FILED APB. 2.1908.

fiagfazwegg B. J KORTING. BOOM HEATING PLANT. APiLIGATION FILED APB..2.1908. 4 22 78; Patented May 25,1909.

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I I x a? w w n n v. n n n fiwnf0r rq/J 'onrrnn strains PATENT anion.

BERTHOLD KORTING, or HANOVER,- GERMANY.

ROOM-HEATING PLANT.

Specification of Letters Patent.

Patented May 25, 1909.

Application filed April 2, 1908. Seria1 No. 424,887.

To all whom itmayconccm:

Beit known that I, BERTHOLD Kontrme, a subject of the King of Prussia,German Emperor, and resident of 30 Am Schilfgrahen, Hanover,.in theKingdom ofPrussia,

.German' Empire, gentleman, have invented certain new and useful Imrovements in fheatin fluid to the various heaters passes 'tbr u a trunkpipe which is regulated by means of a valve actuated by a deviceoperating by the expansionof a body under the heating action of all therooms'fsupplied by said trunk pipe or by only some of these rooms,whereby the average temperature of all the rooms is utilizedforeffecting the regulation of a control device common to the group ofrooms. Any suitable heating fluid 'suchas steam, Water or air may be empoyed. The heaters are preferably arranged in parallel between two trunkpipes or conduits. The invention may be carried out in different waysfor instance the ex anding body may be air or a liquid or a so idexpanding body may be used; i if Referring now to the accompanyingdrawings: Figure 1 shows two rooms of a group in which the expandingbody employed is air. Fig. 2 is a detail-of the actuating motor for thecontrol device. Fig. 3 illustrates arnodification in which liquid isemployed for the actuation of the control device. Fig. 4 shows amodification in which the expansion of a solid body is utilized for theactuation of the e0 trol device. Fig. 5 shows a form in which only theheat of the middle rooms in a group is utilized for heating theexpanding body.

In carryingthe invention into eiiect ace, cordin to th form shown inFig. 1 the heaters in tlie rooms are supplied by a trunk pi e b fromwhich branches '1) lead and from the heater other branches b leadto theexhaust pipe The heating fluid is introduced to trunk pipe I) by meansofa nezzle c. The nozzle 0 is controlled by means of a valve Z connectedby a rod 70 to a bellows like motor at eupper end ofwhich i s-held fixedby means of a screw or the like '5, fixed in a casto heating plants as.

- laving aroun ing a while the lowerend oI -the bellows is free. Betweenthe bellows or motor 6, and the walls of the casing e there is left aspace through'which air circulates. This circulating air is drawn fromthe rooms by meansof a pipe 9 provided with'openings ,h, in the variousrooms. The air circulates through the pipe 9 in the direction shown bythe arrows and this circulation is induced by connecting the casing e bymeans of a pipe (1 with the chamber of the nozzle 0, whereby the nozzle0 acts like auinjector to induce the current of air through the casinge.

The connecting rod 76 is preferably also articulated by means ofsuitable links as shown in Fig. 2 to a but-.

terfly valve'm in-the pipe (1.

The operation of this device is as follows:

The hot air from the various'rooms drawn through the e enings h and thepipe 9 and the 'exteriorof the bellows like motor t causes the expansionof the liquid in the bellows and thereby operates the valve 1 when thetemperaturen eaches a given amount. In this way the regulation of thetemperature in the rooms is determined by the average temperature ofthese at the same time a rooms, while obtain simplecontrol and a o. amore even and regular heating of all therooms than has hitherto beensuggested.-

In the case when -steamisused and the'injector in conse uenceforces -amixture of steam and .-air t rough the trunk pipe, it is advisable thatthe quantity of air drawn in by the injector nozzle 0 through the pipe 9should be as small as possible so as to prevent the quantity ofair'passing through the pipes b becoming too great. This is for thereason that such fresh air involves a 'lossof heat and a lowering of thetemperature of the fluid passing through the trunk pipe to the heaters.This quantity of air is therefore small conduit pipe 9 and further byregulat ing the-flow through'the pipes g byrneans of the valve 'm. Thevalve m is so arranged with relation to the rod 1:: that when "theopening of the valve 1 is increased the valve n throttles the pipe d. Itwill be under' stood that the same relationships hold good when airalone is supplied to the pipe I).

, Instead of using an air stream from the several rooms for efiectingthe heating of an expanding body a liquid of high-expansion coefficientcan be employedin conjunction with the tube 9 In this casb it isimmaterial whether the volumetric changes caused I by vchanges intemperature act directly or air as desired.

through pistons on the motor i. Y The expan sion of the liquid is ofcourse as in the above described case proportional to and dependcut onthe avera e temperature of all the rooms. Such a Form of heating. device1s shown in Fig? 3 and the rooms are provided with containers 9 whichare filled with the fluid of high expansion coefficient. The

tube 9 is closed and may also be filled with a fluid of these tubes maybe filled only with The tube in this case connects directly with theupper end of a cylin der in'which a piston is provided which acts uponfluid, contained in-the lower part of the cylinder, and the bellowsmotor The .lowerend of the motor 01 is as before free to The' move andis connected to the rod rod 7c is connected to the valve I whichcontrols the supply of heating fluid to the pipe 6.. It will be readilyseen that in this form the expansion of the liquid in'the containers .9will cause'the closing of the valve Z. Y I According to the form ofregulating device shown inFlg. 4 the group of rooms are pro vided withacomfnon regulatingdevice or valve Z which is operated by the expansionof a solid body 'i. The solid body '11 is inclosed within a tube r whichis made out of a ma terial' with a lower co-eflicient of expansion thanthe rodi, so that when the tube 2 and the rod i are subjected to theheating action of the rooms p the-tube r expands in a direction of thearrow a; while the rod t expands in the direction y. '-As this last ex-I pension is greater than thefirst there is a re-' sultant relativemovement in the direction 'of the arrow y, whereby the-actuating rod ofthe valve 1 is moved. The rod 01 is supported in guides within the tube1", and

oles s are provided for circulation of the air which thus comes incontact with the inner expanding rod. In Fig. 5 there is illus-- trateda form'fin which the end rooms 1) are i switched OE and only the middlerooms are employed. for the purpose of obtaining the averagetemperatureofthe'group. A

Having thus fully described the nature of my said invention what Idesire to secure by Letters Patent of the United States is 1'. Incombination in aheating' lant for a plurality of rooms, heaters in' t evarious rooms,. a common control device for the heaters m a group ofrooms, an actuating ex- I pansion device for. said control device, saidactuating device being subjected to the temperature, of the air in aplurality of the rooms to beheated. p

. 2. In combination in'a heating lant for a plurality ofrooms,'heaters'in t e various rooms, a common control device fortheheaters in a group of rooms, an actuating expansron device for saidcontrol device, said actuating device being subjected to the heatingaction of the air in all the rooms.

3. In combination in a heating plant for f I plurality of rooms,heaters-in the various rooms; heating fluid supply pipes to saidheaters, a trunk conduit from which said supply pipes lead, a controlvalve in the trunk pipe, an actuating expansion device for said controlvalve, said actuating device being subjected to the heating action ofthe air in a plurality of the rooms the temperature of which is to beregulatedsy 4. In combination in a heating plant for a plurality ofrooms, heaters in the various rooms, hot fluid supply pipes to saidheaters,

a trunk pipe fIO'Ill which said su ply pipes lead,-a controlvalve in the'trun pipe, an

actuating expansion device for said control valve, sald actuatingexpanslon device com prising a fiuidcondult extendlng for part of itslength through a pluralityof its rooms --'and a fluid motor receivingits motive power from the flucthating energy of the fluid in the conduitin consequence of the temperature alterations in the'rooms.

5. In combination in a heating plant for a plurality of rooms, heatersin the various rooms, hot fluid supply pipes to said heaters, atrunkpipe from which said su ply pipes lead, a control valve-in thetrun'r pipe, an actuating expansion device for said control valve, saidactuating expansion device com- .prising a conduit having openingstherein to the various rooms, a motor, a chamber containing said motorand through which the air from said'conduit passes, and means forcausing an air circulation through said conduit Y and chamber.

.6. In combination in a heating lant for a I plurality of rooms, heatersin t e. various rooms, hotfluid supply pipes to said heaters,

a trunk pipe from which said supply pipes lead, a control valve in thetrunk-pipe, an v I actuating expansion device for said control valve,said actuatingexpansion device, com-[ prising a conduit passing throughand having openin 's to they various. rooms, a chamber with wIii'ch saidconduit communicates, an expansible closed bellows within'said chamberanddixed at one end, a connection from the. free endof said bellowsto-the control which said conduit communicates, an eX- In witnesswhereof I have hereunto set my pansible closed. bellows within saidchamber hand in the presence of two witnesses. and fixed at one end, aconnection from the v free end of said bellows to the control valve,BERTHOLD KQRTING.

an injector on the trunk pipe :1 p e leadin y from the bellowscontaining chamger to th; ltnessezs v injector, and a control valve onsaid pipe and BERDING;

operated by the bellows. FRANZ. TIGGEs.

